@Grm Yes the sessions can be beneficial. I have done most of the beginner and intermediate sessions and would characterize them as supplementing what a rider misses from being on a stationary bike (core, balance, etc.). There is some overlap with yoga in a few of the sessions. You are not going to see any heavy lifts in the program. I have used the sessions on their own and also as a warm up before doing some additional lifting - such as deadlifts, squats, cleans, push press.
One consideration is that they do take time so if you are just looking to limit things to an hour and do a bike workout and yoga things could be challenging. I am not currently doing strength but will incorporate it into my next plan.
Here is a thread that you might find useful on the topic of strength sessions: